갈대 생육지에서 질소 시비가 사초의 생육과 수량 및 사료가치에 미치는 영향

서성,박진길,김원호,김맹중,이상학,정종성,박형수,성하균,이종경,Seo, Sung,Park, Jin Gil,Kim, Won Ho,Kim, Meing Jooung,Lee, Sang Hak,Jung, Jong Sung,Park, Hyung Soo,Sung, Ha Guyn,Lee, Joung Kyong 한국초지조사료학회 2013 한국초지조사료학회지 Vol.33 No.2

본 연구는 질소(N) 시비가 부존 조사료자원인 갈대(Phragmites communis)의 생육과 수량 및 사료가치에 미치는 영향을 구명하고자 2012년에 충남 천안과 경기 안산지역에서 실시되었다. 천안 국립축산과학원 갈대 재배지에서는 N 무시비구, N 50 kg/ha구, N 100 kg구 등 3처리를 두고 4월 30일 시비, 6월 21일 수확하였으며, 안산 시화간척지 갈대 자생지에서는 N 무시비구, N 60 kg/ha구 등 2처리를 두고 5월 1일 시비, 8월 1일 수확하였다. 갈대의 초장과 엽색은 N 시비구에서, 그리고 N 시비수준이 높을 때 양호하였다. 건물률은 N 시비구에서 약간 낮아지는 경향으로 천안지역은 무시비구 39.8%, N 시비구 37.6%, 36.7%, 안산지역은 무시비구 39.4%, N 시비구 37.6%였다. 천안지역의 건물수량, 조단백질 수량 및 가소화 건물수량은 무시비구에서 ha당 각각 4,026 kg, 235 kg, 1,850 kg, N 50 kg 시비구는 각각 4,658 kg, 306 kg, 2,388 kg, N 100 kg 시비구는 각각 5,622 kg, 446 kg, 3,143 kg으로 유의적으로 증가하였으며 (p<0.05), 안산지역은 무시비구에서 각각 2,802 kg, 177 kg, 1,288 kg, N 60 kg 시비구는 각각 3,876 kg, 294 kg, 1,853 kg으로 유의적으로 증가하였다 (p<0.05). 천안지역의 조단백질 함량, 건물 소화율 및 상대사료가치 (RFV)는 무시비구에서 각각 5.85%, 45.96%, 64.0 (품질 5등급), N 50 kg 시비구는 각각 6.58%, 51.27%, 72.3 (5등급), N 100 kg 시비구는 각각 7.94%, 55.91%, 72.7 (5등급)로 높아졌으며, 안산지역도 무시비구에서 각각 6.30%, 45.98%, 70.2 (5등급), N 60 kg 시비구는 각각 7.59%, 47.80%, 78.3 (4등급)으로 높아지는 경향이었다. 이상의 결과를 종합하여 볼 때, 갈대 생육지는 시비가 가능한 조건이라면(하천변이나 강변 등 수질오염이 우려되는 지역이 아닌), ha당 N 60~100 kg을 생육기에 시용해 주는 것이 생산량과 사료가치를 크게 개선시켜줄 수 있어 바람직하였다. This study was carried out to investigate the effect of nitrogen (N) fertilization on the forage growth, production and quality of native reed (Phragmites communis) grasses. Field experiments were conducted in Cheonan and in Ansan, 2012. Treatments were control (no N fertilization), 50 kg/ha and 100 kg/ha in Cheonan plots (fertilization on April $30^{th}$, and harvest on June $21^{st}$). Treatments in Ansan plots were control (no N fertilization) and 60 kg/ha (fertilization on May first, and harvest on August first). Forage growth and leaf colors were improved in N fertilized plots. However, the drymatter (DM) percentage was slightly decreased with N fertilization. Forage yields, in terms of DM, crude protein (CP) and digestible DM (DDM), were significantly increased with N fertilization in both sites. In Cheonan, DM, CP and DDM yields per ha were 4,026 kg, 235 kg and 1,850 kg, respectively, in the control plot, and were 4,658 kg, 306 kg and 2,388 kg, respectively, in the N 50 kg plot, and 5,622 kg, 446 kg and 3,143 kg, respectively, in the N 100 kg plot. In Ansan, DM, CP and DDM yields per ha were 2,802 kg, 177 kg and 1,288 kg, respectively, in the control plot, and were 3,876 kg, 294 kg and 1,853 kg, respectively, in the N 60 kg plot. Forage quality in terms of CP content, in vitro DM digestibility (IVDMD) and relative feed value (RFV) were also increased with N fertilization in both sites. In Cheonan, the CP content, IVDMD and RFV were 5.85%, 45.96% and 64.5 (grade 5), respectively, in the control plot, 6.58%, 51.27% and 72.3 (grade 5), respectively, in the N 50 kg plot, and 7.94%, 55.91% and 72.7 (grade 5), respectively, in the N 100 kg plot. In Ansan, the CP content, IVDMD and RFV were 6.30%, 45.98% and 70.2 (grade 5), respectively, in the control plot, and 7.59%, 47.80% and 78.3 (grade 4), respectively, in the N 60 kg plot. In conclusion, N fertilization of 60~100 kg/ha was desirable for greater forage production, with a higher quality of native Phragmites communis achievable. This should only be applied if the fertilization area is not located at a riverside/streamside or in riparian land where there is a high risk of water pollution by fertilization.

The maintenance of free-living amoebae by cryopreservation

Sung-Ah Seo(서성아),Tai-Soon Yong(용태순),Kyung-il Im(임경일) 대한기생충학열대의학회 1992 The Korean Journal of Parasitology Vol.30 No.2

이탈리안 라이그라스 '코윈어리'의 봄철 1회 및 2회 이용에 따른 수확적기 구명

서성,김맹중,김원호,이상학,정민웅,김기용,지희정,박형수,김종근,최기준,Seo, Sung,Kim, Meing Jooung,Kim, Won Ho,Lee, Sang Hak,Jung, Min Woong,Kim, Ki Yong,Ji, Hee Chung,Park, Hyung Soo,Kim, Jong Geun,Choi, Gi Jun 한국초지조사료학회 2013 한국초지조사료학회지 Vol.33 No.1

본 연구는 국내 개발 이탈리안 라이그라스 (IRG)의 봄철 1회 및 2회 이용 시 수확적기를 구명하고자 국립축산과학원(수원)에서 조생종 'Kowinearly' 품종을 공시, 2009년 9월 30일에 파종하여 2010년 6월까지 수행하였다. 처리내용은 1차 수확시기로 출수시(T1), 출수기(T2), 출수후기~개화초기(T3), 개화기~개화후기(T4), 등숙기(T5) 및 등숙후기(T6) 등 6처리였으며, 2차 수량조사는 6월 11일 동일하게 실시하였다. 'Kowinearly'의 출수시는 5월 4~5일, 출수기는 5월 14일, 도복은 개화 이후 많이 관찰되었다. 건물률은 T1 14.8%에서 T6 35.0%로 생육진행에 따라 높아졌으며, 조단백질, RFV, 건물 소화율 등 사료가치는 생육 지연에 따라 낮아졌다. 건물수량과 가소화 건물수량은 T4에서 ha당 각각 8,984 kg과 5,728 kg으로, 조단백질 수량은 T3에서 795 kg으로 유의적으로 높았으며 (p<0.05), 재생초의 건물수량, 조단백질 수량, 가소화 건물수량은 T1과 T2에서 차이 없이 각각 5,425 kg, 596 kg, 3,204 kg(T1)과 4,811 kg, 589 kg, 3,143 kg (T2)으로 유의적으로 높았다 (p<0.05). 총 건물수량, 조단백질 수량, 가소화 건물수량은 T2 와 T3에서 차이 없이 각각 11,089 kg, 1,254 kg, 7,669 kg(T2)과 10,354 kg, 1,225 kg, 6,915 kg (T3)으로 유의적으로 높았다 (p<0.05). 일당 건물생산량과 일당 가소화건물생산량은 1차 생육은 T2, T3, T4에서, 재생초는 T2, T1에서 높았으며, 전 기간 일당생산량에서는 출수기인 T2에서 가장 높았고 다음이 T3, T4, T1 순이었다. 이상의 결과를 종합하여 볼 때, IRG 'Kowinearly'를 봄철에 1회 수확하여 이용할 경우 단위면적당 생산량과 사료가치를 고려한 수확적기는 출수후기~개화기이며, 봄철 2회 수확하여 이용할 경우 재생과 단위면적당 총 생산량을 고려한 1차 수확적기는 출수기가 유리하다고 판단된다. This study was carried out to determine the optimum harvest stage of Italian ryegrass (Lolium multiflorum Lam., IRG) for maximum forage production during the spring season in Suwon, 2010. The variety of IRG was the early maturity type, 'Kowinearly', and six harvest stages (treatments) were first heading (T1), heading (T2), late heading to early bloom (T3), bloom to late bloom (T4), ripeness (T5), and late ripeness stage (T6). The dates of the first heading and heading of 'Kowinearly' were seen on 4 to 5 May, and 14 May, respectively. Plant length and dry matter (DM) percentage at first harvest were from 69 cm and 14.8% at T1 stage to 103 cm and 35.0% at T6 stage, respectively. The content of crude protein (CP) and in vitro DM digestibility (IVDMD) of T1, T2, T3, T4, T5 and T6 at first harvest were 15.6%, 10.6%, 10.1%, 8.1%, 7.3% and 5.4%, and 81.8%, 72.1%, 64.8%, 63.8%, 61.4% and 59.0%, respectively. The content of neural detergent fiber (NDF) and acid detergent fiber (ADF) were increased continuously with delayed harvest. A significantly higher yield of DM, CP and in vitro digestible DM (IVDDM) were observed for T3, and T4 (p<0.05). DM yield of 3,526 kg, 6,278 kg, 7,842 kg, 8,984 kg, 8,346 kg and 8,008 kg/ha, CP yield of 549 kg, 665 kg, 795 kg, 725 kg, 608 kg and 430 kg/ha, and IVDDM of 2,883 kg. 4,526 kg, 5,083 kg, 5,728 kg, 5,124 kg and 4,722 kg/ha at first harvest were recorded in T1, T2, T3, T4, T5 and T6, respectively. Regrowth yield of DM, CP and IVDDM were shown to be higher at T1 and T2 (p<0.05). However, no significant differences were observed between the two stages. Daily DM and DDM production of regrowth IRG were higher at T2, followed by T1. The total yield (at first and at regrowth) of DM, CP and IVDDM were significant higher for T2, followed by T3, T4 and T1 in order. At T2 stage, the yield was 11,089 kg, 1,254 kg, and 7,669 kg/ha in DM, CP, and IVDDM. In conclusion, the late heading to bloom stage was determined to be the optimum harvest stage for a single harvest, while the heading stage was a suitable stage of first harvest of 'Kowinearly' where two harvests were sought in a single year.

질소시비수준과 예취높이가 청예용 수단그라스계 잡종의 신지의 발생과 건물량 및 수량에 미치는 영향

서성,김동암 ( Sung Seo,D . A . Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.5

Sorghum-sudangrass hybrid (Sorghum bicolor (L.) Moench) is one of the most important annual grasses utilized for supplemental summer forage. For better forage production, this experiment was carried out to investigate the effect of the different nitrogen (N) rate and cutting height on the appearance, dry weight, death of new bud (branch and tiller), and dry matter yield of sorghum-sudangrass hybrid. The cultivar used in the present study was Pioneer 988. The experiment was arranged as a split plat design and undertaken over a period of 5 months from May to September, 1981 and 1982 in Suweon, Korea. The frequency of the branching was decreased as the low stubble height, and the rate of the tillering was decreased in the high stubble. And the low cutting height resulted in the increased number of dead bud. However, the appearance and death of branch and tiller were not influenced by high N. Tillering is more important than branching in influencing yield. The yield of forage mostly depended on the tiller, regardless of cutting height, especially at the low stubble height. And minor portion of the yield was resulted from the branch. No significant difference between dry matter yield and cutting height was found. However, the yield tends to increase in the high stubble height and high N fertilization. The regrowth and dry matter yield were influenced by climatic conditions significantly. These results suggests that the low stubble height of 5 ㎝ was recommended on sunny days with high temperature, while the high stubble of 15 ㎝ on rainy days or low temperature, and the 150 to 200 ㎏/㏊ N fertilizer for the maximum production of forage sorghumsudangrass hybrid.

제한통성 메탄올자화세균인 Methylovorus sp. Strain SS1의 분리 및 특성

서성아,김영민,Seo, Sung A.,Kim, Young M. The Microbiological Society of Korea 1993 미생물학회지 Vol.31 No.3

A restricted facultatively methanol-oxidizing bacterium, Methylovorus sp. strain SS1, was isolate dfrom soil samples from Kuala Lumpur, Malaysia, through methanol-enrichment culture technique. The isolate was nonmotile Gram-negative rod and did not have complex internal membrane system. The colonies were small, pale-yellow, and raised convex with entire margin. The cell did not produce any spores and capsular materials. The cell was obligately aerobic and exhibited catalase, but no oxidase, activity. Plasmid, carotenoid pigment, and poly-.betha.-hydroxybutyric acid were not found. The guanine plus cytosine content of the DNA was 55%. The isolate was found to grow only on methanol methylamine, or glucose. Growth factors were not required. Cells growing on methanol was found to produce extracellular polysaccharides containing glucose, lactose, and fructose. Growth was optimal (t$_{d}$= 1.7) with 0.5%(v/v) methanol at 40.deg.C and pH 6.5. No Growth was observed at over 60.deg.C. Cell-free extracts of the methanol grown cells exhibited the phenazine methosulfate-linked methanol dehydrogenase activity Methanol was found to be assimilate dthrough the ribulose monophosphate pathway.y.

방목 초지관리

서성,Seo, Sung 한국초지조사료학회 1992 한국초지조사료학회지 Vol.12 No.3

지난 20년간 방목 초지관리에 관해 국내 대학과 연구기관에서 발표된 성적을 간략히 고찰해 보는 것은 지금까지의 시험연구를 종합정리하고 앞으로의 연구방향을 제시하는데 나름대로 커다란 의미를 부여할 수 있을 것이다. 채초관리에 있어서는 그간 괄목할만한 성과가 거양되었으나 방목관리분야에 관한 시험연구는 전반적인 체계없이 단편적인 결과보고에 치우친 감이 많다. 초지의 방목관리와 관련되어 발표된 주요 연구로는 예취와 방목이용비교, 초기 방목관리, 방목시기, 방목강도, 휴목기간, 시비관리, 임간방목지 관리, 방목체계 확립 이용방법과 가축생산성, 혼파조합과 가축생산성, 초지 형태와 가축생산성 등이 있다. 최근 노동력 부족과 인건비 상승 및 수입개방 등 국내외적인 어려운 여건으로 볼 때 초지관리의 연구목표는 생력관리와 생산비 절감에 두어져야 하며, 특히 앞으로의 초지개발이 산지에서 이루어지고 우리나라 산지의 특수성에 미루어 방목관리 이용에 관해서는 다각적인 연구검토가 요망된다. 앞으로의 연구과제로서는 가족 노동중심의 방목관리, 농가규모의 적정방목시스템, 방목지에서의 적정 질소시비수준, 경사지 방목시 유지년한 연장과 토양유실 방지, 가축 분뇨의 초지환원과 환경오염 방지, 임간지에서 목초와 토양 및 나무피해와 방목효율증진, 전기목책 등 간이목책시설 및 기타 초지생산과 방목가축 생산 효율 증진방안 등을 들 수 있다.

다차원척도법에 의한 장애인 운전지원센터의 확대요구도 평가모형 분석 -부산남부운전면허시험장을 중심으로-

서성구 ( Seo Seong-gu ),고상선 ( Ko Sang-seon ) 한국도로교통공단 2015 교통안전연구 Vol.34 No.-

본 연구는 장애인운전지원센터를 이용한 장애인들을 대상으로 본 센터와 관련한 만족도 및 확대 요구도 평가모형을 다차원선호도분석에 의하여 구축하고, 이를 기반으로 장애인 운전면허 취득지원정책의 효과를 분석하고자 하였는바, 그 결과를 요약하면 다음과 같다. 첫째, 본 평가모형은 1, 2차원만으로도 그 누적변량비가 65.5%, R2평균값의 변동정도도 2차원일 때 설명력이 48.7에서 65.5로 가장 크게 변동 되었는바, 2차원 해를 최적해로 간주해도 좋을 것으로 판단되었다. 둘째, 본 평가모형을 도해한 결과, 평가문항 제Ⅰ집단은 피험자 속성 제1집단과 제Ⅱ집단은 피험자속성 제2집단과 제Ⅲ집단은 피험자 속성 제3집단과 잘 포지셔닝을 하고 있고, 제Ⅴ집단은 피험자 속성 제4집단과 잘 포지셔닝을 하고 있는 등 제Ⅳ집단에 속하는 2가지를 제외한 나머지 시스템(98.3%)들은 피험자들에 대한 평가방향이 잘 나타나고 있는 등 장애인운전지원센터와 관련한 만족도 및 확대 요구도에 대한 피험자들의 의견과 부합정도가 높은 것으로 판단되었다. 이상의 연구 결과를 볼 때, 향후 이러한 장애인운전지원센터와 관련한 만족도 및 확대 요구도를 기반으로 한 장애인 운전면허 취득지원정책의 효과 분석 시에는 피험자들의 의견이 보다 더 잘 부합될 수 있도록 철저를 기해야 할 것으로 판단되었다. 또한 피험자들에 대한 부합정도의 평가와 현재의 장애인 운전면허 취득지원정책들과 상호 비교하는 연구가 지속적으로 이루어져야 할 것이다. 아울러 공공기관의 공익부문 기능을 강화하기 위하여 장애인운전지원센터의 기능을 보다 더 추가, 확대해 나갈 수 있는 방안의 강구도 필요할 것으로 판단되었다. This study is aimed to establish the evaluation model for the satisfaction and demand for expansion related to Driving Assistance Center of the Disabled using Multidimensional Analysis of Preference Data and to analyze an effect of the assistant policy on getting a driver’s license for the disabled. The results are as follows. First, in the evaluation model, the proportion of variance of 1 dimension and 2 dimension took 69.4% of the total. And the average change of R2 changed most from 47.3 to 69.4 in the explanatory degree of 2 dimension. Therefore, it was determined that the value of 2 dimension could be the optimum solution. Third, when this model was illustrated in diagram, it was shown that I group of the subject of evaluation were well positioned with 1 group of the attribute of evaluation, Ⅱ group of the subject of evaluation were well positioned with 2 group of the attribute of evaluation, Ⅲ group of the subject of evaluation were well positioned with 3 group of the attribute of evaluation and Ⅴ group of the subject of evaluation were well positioned with 4 group of the attribute of evaluation respectively. Therefore, the system (98.3%) except 2 cases of Ⅳ group of the subject of evaluation well represented the a direction of evaluation, which means it has high degree of correspondence with the evaluators’ opinions on the satisfaction and demand for expansion with the Driving Assistance Center of the Disabled. Judging from these findings, it is known that evaluators' opinions should be more reflected in analyzing the effect of the assistant policy of getting a driver’s license of the people with severely disabilities. In addition, it is required that consistent studies be conducted that compare the evaluation of reflection of the evaluators and the assistant policy of getting a driver’s license of the disabled. Furthermore, to reinforce the public functions of public authority, the functions of the Driving Assistance Center of the Disabled should be added and expanded more.

주요 화본료 목초의 종자생산을 위한 적정 채종시기 구명에 관한 연구

서성,김동암 ( Sung Seo,Dong Am Kim ) 한국축산학회 1980 한국축산학회지 Vol.22 No.1

In order to ascertain the optimum seed harvesting time for maximum seed yield of high quality, this experiment was carried out in relation to percentage of fertile florets, 1000 seed weight, germinability and seed shedding time of six gasses in 1979. The grasses involved in the present study were orchardgrass, tall fescue, smooth laromegass, Italian ryegrass, perennial ryegass and timothy. Each head was tagged at head emergence and anthesis, and seeds were sampled 15, 20, 25 and 30 days after peak anthesis, and according to head emerged date, that is, early, intermediate and late, respectively. The results of this study are summarized as follows: 1. Early emerged head was larger than late one and required more time during head emergence and anthesis than late emerged head. 2. Anthesis began at 06:00 hr in orchardgrass, 08:00 hr in Italian ryegrass, timothy and perennial ryegrass and at 10:00 hr in tall fescue, however, 15:00 hr in smooth bromegrass. Average period of anthesis was approximately 2-3 hrs a day. 3. Percentage of fertile florets of the most grasses was ranged from 40 to 60% except 70% in tall fescue and there were little differences in harvesting dates after peak anthesis, but average fertility of seeds from the early emerged head was higher than that of late head. 4. It is indicated that good quality seeds of grasses could be obtained 20 anti 25 days after peak anthesis. 1000 seed weight from early emerged head was heavier than that from late head. 5. Germination percentage at harvest was very low (0-20%) due to dormancy and after-ripeness of seeds except smooth bromegrass (80%), but germination percentage after two months` storage in the laboratory was increased considerably. Reasonable germination (90%) was attained 25 days after peak anthesis in orchardgrass, tall fescue and Italian ryegrass, and 20 days in smooth bromegrass and perennial ryegrass, however, 30 days were required in timothy. Seeds from early emerged head gave higher germinability than those from late head. 6. Seed shedding appeared 20-25 days after peak anthesis in orchardgrass, smooth bromegrass and Italian ryegrass, but tall fescue and perennial ryegrass showed a few days earlier than that of orchardgrass, and timothy did a few days later. 7. As the results of the experiment, optimum seed harvesting date seems to be 20-25 days after peak anthesis in smooth bromegrass and perennial ryegrass, and 25 days in orchardgrass, tall fescue and Italian ryegrass, but 30 days were recorded in timothy.

마약범죄 통제를 위한 예산정책 연구

권오성(Kwon O-Sung),서성아(Seo Sung-Ah),김윤수(Kim Youn-Soo) 한국형사법무정책연구원 2005 형사정책연구원 연구총서 Vol.- No.-

수동면역이 Acanthamoeba culbertsoni 능동면역 형성에 미치는 영향

孔顯浩(Hyun-Ho Kong),徐星娥(Sung-Ah Seo),愼珠沃(Chu-Og Shin),任敬一(Kyung-il Im) 대한기생충학열대의학회 1993 The Korean Journal of Parasitology Vol.31 No.2